gcc/testsuite/gcc.dg/atomic-fence.c

   1 /* Test __atomic routines for existence and execution with each valid
   2    memory model.  */
   3 /* { dg-do run } */
   4 /* { dg-require-effective-target sync_char_short } */
   5
   6
   7 /* Test that __atomic_{thread,signal}_fence builtins execute.  */
   8
   9 main ()
  10 {
  11   __atomic_thread_fence (__ATOMIC_RELAXED);
  12   __atomic_thread_fence (__ATOMIC_CONSUME);
  13   __atomic_thread_fence (__ATOMIC_ACQUIRE);
  14   __atomic_thread_fence (__ATOMIC_RELEASE);
  15   __atomic_thread_fence (__ATOMIC_ACQ_REL);
  16   __atomic_thread_fence (__ATOMIC_SEQ_CST);
  17
  18   __atomic_signal_fence (__ATOMIC_RELAXED);
  19   __atomic_signal_fence (__ATOMIC_CONSUME);
  20   __atomic_signal_fence (__ATOMIC_ACQUIRE);
  21   __atomic_signal_fence (__ATOMIC_RELEASE);
  22   __atomic_signal_fence (__ATOMIC_ACQ_REL);
  23   __atomic_signal_fence (__ATOMIC_SEQ_CST);
  24
  25   return 0;
  26 }
  27